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Analysis of the Implementation Effect of Total Water Load Management System Using Load Duration Curvesin Sapgyo Watershed

  • Journal of Environmental Impact Assessment
  • Abbr : J EIA
  • 2019, 28(6), pp.536-548
  • Publisher : Korean Society Of Environmental Impact Assessment
  • Research Area : Engineering > Environmental Engineering
  • Published : December 31, 2019

Eun Jeong Lee ORD ID 1 Kim Taekeun ORD ID 1

1청주대학교

Accredited

ABSTRACT

In orderto quantify the effect of the newly established the Total Water Load Management System in Sapgyo watershed, this study predicted the achievement of the target water quality at each unit watershed and the water quality according to the flow section. The HSPF model, which is the watershed runoff model, was constructed and operated based on 2015, and the water quality was predicted by inputting the loads in finaltarget year(2030). The Load Duration Curve (LDC) was created using the simulated results of base year and target year. As a result of plotting water quality by flow conditions, it was simulated to be close to the BOD target with a difference of 0.1 ~ 0.2 mg/L in allthree watersheds during the mid-range flow interval (40 ~ 60%). In case of T-P, although the target water quality was not set, the water quality was improved by Cheonan A 46%, Kokgyo A 29% and Namwon A 25%. The Muhan and Sapgyo river basins meetthe target grade of middle-watershed standards. The improvement effect will be positive, as water quality, which achieves the target of Total Load Management System and the target grade of the middle-watershed standards will be expected to flow into the Sapgyo lake.

Citation status

* References for papers published after 2023 are currently being built.